Question

Length of the day is increased by 4 minutes due to O Refraction O Total Internal Refraction O Scattering O Dispersion​

Answer 1

Answer:

scattering

Explanation:

when the sun has been set or is yet to rise, its light is however spread before sunrise and after sunset also. This is because the rays of sun when hit the dust particles and molecules in air, they are scattered and the light can be seen even when the sun itself isn't there.

Answer 2

Length of the day is increased by 4 minutes due to Refraction.

Explanation:

• When light rays travel from one medium to another, it undergoes refraction due to difference in densities of the medium.

• Density of medium affects the speed of light due to which it either bends away or towards the normal.

• Earth's atmosphere has different layers with various optical densities.

• Advancement in time duration of sunrise and sunset is also a consequence of atmospheric refraction caused when sunlight travels through different layers of atmosphere.

• We tend to see the sun 2 minutes before actual sunrise and continue to see the sun 2 minutes after actual sunset.

• The apparent position of sun is always some distance above the horizon even if the actual position is below the horizon.